Two charges q1 and q2 are kept on x− axis and electric field at different points on x− axis is plotted against x. Choose correct statement about nature and magnitude of q1 and q2.
A
q1+ve,q2−ve;|q1|>|q2|
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
q1+ve,q2−ve;|q1|<|q2|
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
q1−ve,q2+ve;|q1|>|q2|
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
q1−ve,q2+ve;|q1|<|q2|
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution
The correct option is Cq1−ve,q2+ve;|q1|>|q2|
We can see from the graph that:
(1).
Just to the left of q1, the electric field is +α (let) or toward right (toward q1).
Hence, q1 is negative because x is negative and E is positive.
(2).
Just to the right of q2, the electric field is +α (let) or toward right (away from q2).
Hence, q2 is positive because x is positive and E is positive.
(3). Enet=0 near q2.
Hence, |q1|>|q2| because E∝qr2